Flawless or internally flawless (FL, IF) diamonds are priced roughly 13% higher than VVS1 and VVS2 diamonds, more than 30% higher than VS1 or VS2 diamonds, and almost 60% higher than SI1 or SI2 diamonds.

Very Very Slightly Included (VVS1 and VVS2 ); Very Slightly Included (VS1 and VS2); Slightly Included (SI1 and SI2) and Included (I1,I2, and I3) are the other internationally recognised terms which feature on diamond grading certificates worldwide.

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